package com.example.test_1_24_springmvctest;

import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@RequestMapping("/user")
@RestController
public class UserController {
    @RequestMapping("/login")
    public boolean login(String userName, String password, HttpSession session){
        // 先校验参数的合法性
       /* if(username == null || username.length() == 0 || password == null || password.length() == 0){
            return false;
        }*/
        // Spring 给了一个更方便的方式判断字符串是否为空
        if(!StringUtils.hasLength(userName) || !StringUtils.hasLength(password)){
            return false;
        }
        // 进行用户名和密码的校验
        if("admin".equals(userName) && "admin".equals(password)){
            // 设置Session
            session.setAttribute("username","admin");
            return true;
        }
        return false;
    }

    @RequestMapping("/getUserInfo")
    public String getUserInfo(HttpServletRequest request){
        // 从Session 中获取 登录用户
        HttpSession session = request.getSession(false);
        String userName = null;
        if(session != null) {
            userName = (String) session.getAttribute("username");
        }
        return userName;
    }
}
